package wang.aweb.childcar.exception;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.validation.BindingResult;
import org.springframework.validation.ObjectError;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import wang.aweb.childcar.common.ApiRestResponse;

import java.util.ArrayList;
import java.util.List;

/**
 * 描述：处理统一异常的handler
 */
@ControllerAdvice
public class GlobalExceptionHandler {
    private final Logger log= LoggerFactory.getLogger(GlobalExceptionHandler.class);
    @ExceptionHandler(Exception.class)
    @ResponseBody
    public Object handleException(Exception e){
        log.error("Default Exception:",e);
        return ApiRestResponse.error(CarExceptionEnum.SYSTEM_ERROR);
    }
    @ExceptionHandler(CarException.class)
    @ResponseBody
    public Object handleMallException(CarException e){
        log.error("Car Exception:",e);
        return ApiRestResponse.error(e.getCode(),e.getMessage());
    }
    @ExceptionHandler(MethodArgumentNotValidException.class)
    @ResponseBody
    public ApiRestResponse handleMethodArgumentNotValidException(MethodArgumentNotValidException e){
        log.error("MethodArgumentNotValidException: "+e);
        return handleBindingResult(e.getBindingResult());
    }
    private ApiRestResponse handleBindingResult(BindingResult result){
        //把异常处理为对外暴露的提示
        List<String> list=new ArrayList<>();
        if(result.hasErrors()){
            List<ObjectError> allErrors=result.getAllErrors();
            for(int i=0;i<allErrors.size();i++){
                ObjectError objectError=allErrors.get(i);
                String message=objectError.getDefaultMessage();
                list.add(message);
            }
        }
        if(list.size()==0){
            return ApiRestResponse.error(CarExceptionEnum.REQUEST_PARAM_ERROR);
        }
        return ApiRestResponse.error(CarExceptionEnum.REQUEST_PARAM_ERROR.getCode(),list.toString());
    }
}
